SUBSTANCE: invention relates to construction and can be used for construction of an earth bed and a device of reinforced road bases on roads of categories I-V in road climatic zones II-V, as well as pavements on roads of categories IV-V as material for construction of earth bed fills and reinforcement of soil bases of construction and other sites. Improved road-building soil is characterised by the fact that it is obtained from a mixture containing the following, wt %: cement 5-15, waste of thermal utilisation of oil slurries - ash and slag with density of 1.2 to 1.6 kg/dm3 30-40, mineral filler 0-30, peat sorbent 2-4, drilling slurry with density of 1.3 to 1.8 kg/dm3 is the rest.

EFFECT: reduction of consumption of cement and fillers; utilisation of wastes.

7 dwg, 7 ex

The invention relates to the construction and can be used for the construction of subgrade and devices fortified road bases on the roads I-V categories in the II-V-road-climatic zones, as well as coatings on the roads IV-V categories as material for the construction of embankments, subgrade and strengthening of soil building and other sites.

From the patent of the Russian Federation 2303011 known building material "Barolet, including drill cuttings, cement, urea-formaldehyde foam, characterized in that it contains cuttings density from 1.3 to 1.8 kg/DM3, urea formaldehyde foam density of 10-30 kg/m3in the amount of 10-25% by volume of drill cuttings, cement in the amount of 10-20% of the volume of drill cuttings and additionally mineral filler with a particle size of from 2.7 to 3.1 mm, selected from the group consisting of sand and crushed granite, in the amount of 10-20% of the volume of drill cuttings.

The mixture is produced by adding to the drilling mud with a density of from 1.3 to 1.8 kg/DM3with constant stirring urea-formaldehyde foam, having a density of 10-30 kg/m3in the amount of 10-25% by volume of the drilling sludge; cement in the amount of 10-20% of the volume of drilling wastes; mineral filler in the amount of 10-20% of the volume of drill cuttings. Mixing of cuttings and to palezieux components to obtain a homogeneous,
rapidly growing mass produce with the help of an excavator due to the motion of the excavator bucket in the longitudinal and transverse directions.

From the patent of the Russian Federation No. 2399440-known formula for obtaining a building material, including drill cuttings, mineral Supplement, the accelerator, the drying and curing agent, characterized in that it contains as mineral supplements, loam, sand, Postanovlenie faction, as the accelerator is calcium chloride and/or sodium, as the desiccant is at least one of: peat, rock wool, slag wool, cellulose fibers, silica gel, penoizol as the hardener, cement and/or bitumen and extra - carboxymethylcellulose - CMC and/or polyvinylacetate - PVA and exhaust technological solution density of 1.08 is 1.86 t/m3and drilling waste water resulting from the drilling operations, in the following ratio, wt.%:

cuttings

1,0-30,0

specified technological solution

from 1.0 to 40.0

the mineral Supplement

0,9-45,0

specified dehumidifier

1,0-38,0

CMC and/or PVA

0,1-0,2

the specified accelerator

1,0-2,0

cement

from 1.0 to 22.0

bitumen

1,0-5,0

these waste drilling water

rest

The closest analogue of the claimed invention is the construction material gerontology fortified, disclosed in the patent of the Russian Federation 2471737, including drill cuttings density from 1.3 to 1.8 kg/DM3the cement as the main binder in the amount of 4-12% by weight of the mixture, the desiccant - building plaster 2-4% by weight of the mixture, mineral filler - sand natural in the amount of 40-70% by weight of the mixture.

The task that sent the claimed invention is the extension of the range of road construction composite materials (DSCM) and nomenclature of soils suitable for strengthening (for example, one dimensional Sands with an acidic environment).

The technical result of the claimed invention are: saving of cement by 10-30% compared with the usual norm for reinforced soils, reducing consumption of imported stone materials, up to a total rejection of their application and replace with DSCM, HCDS (soils in kreplenie road construction),
getting reinforced soil (UG) with the desired characteristics of strength, waterproof, cold resistance and deformation, the effective disposal of drilling waste, reducing costs and reclamation of sludge pits and landfills, improve the environment, the use of components in a mixture of drill cuttings, which is the waste drilling and thermal utilization of waste sludge (ash mixture). Drill cuttings, in and of itself is a waste, but when using it as a component DSCM eliminates migration activity of pollutants and waste acquires the class of secondary material.

The claimed technical result is achieved due to the fact that the used soil fortified road construction, characterized in that it is obtained from a mixture comprising, by wt.%: cement 5-15, waste thermal sludge utilization - solochek density of from 1.2 to 1.6 kg/DM330-40, mineral filler, 0-30, peat sorbent 2-4, cuttings density from 1.3 to 1.8 kg/DM3the rest of it.

Fig. 4 - applications Grun is but a fortified road construction in the construction and repair of pads;
where a is the waterproofing pads, B - repair pads with ground subsidence in the area of the wellhead, the strengthening of slopes of the banks, G - dumping Foundation pads;

Fig. 5 - use the soil fortified road construction by reclamation of sludge pits with a preliminary excavation of drill cuttings from the barn;

Fig. 6 - use of soil fortified road construction by reclamation of sludge pits without prior excavation of drill cuttings from the barn;

Disposal of drill cuttings together with waste thermal sludge utilization, with the same technology and formulation of washing fluid relating to IV or III hazard class, with receipt of environmentally friendly materials, made by binding and neutralizing toxins in the monolithic structure of the consolidated material and the removal of their migratory activity. DSCM artificial material obtained by mixing career mixing plants, either in landfills or directly on the road (using cutters, excavators of autograder) drill cuttings together with ash mixtures
with cement or other inorganic cementitious additives and active substances and sorbents with subsequent laying and compaction, in communicating to the optimum moisture content and responsible in the project or interim periods of the normalized indicators of quality in strength, frost resistance and environmental safety. Composition, structure, physical-mechanical characteristics and other properties, and applications, methods of preparation DSCM is a type of fortified soil or processed materials in accordance with GOST 23558-94. Used in the claimed compositions drilling sludge is a plastic (from semi-liquid to viscous consistency) pasty mass consists of particles drilling cuttings and waste drilling mud (ARR). In the composition of the solid phase slams are different degrees of dispersion (colloidal 5-10 mm) particles drilling and injecting washing fluid claypowders (bentonite, montmorillonite), as well as insoluble and soluble additives (calcium carbonate, barite, and others). The liquid phase BSH is formed by the discharge of a certain quantity of drilling mud and waste water when washing equipment.

Part of BSH includes particles of drilling cuttings and drilling fluid, the ratio may be different, for example, brown is the second sludge deposits OJSC "TNK-Nizhnevartovsk" contains,
wt.%:

- cuttings - 55-75;

- drilling fluid exhaust (ARR) - 25-45.

This MOD includes the following components: sand in the amount of 3-4%, water in an amount 90-92% and colloidal phase low density of 5-6%, which includes the following chemicals: bentonite bentonite (for example, brand PMBA), drugs CMC (connection polyanionic cellulose), soda and caustic soda, chalk, barite, water-soluble high molecular polymer compound (polyacrylamide, polyacrylonitrile), salt (potassium chloride, sodium chloride) and other substances.

For processing used slams, having a density in the range of 1.3-1.8 kg/DM3and humidity in the range of 30-60%.

Used in the claimed compositions of the mixture of ash (SSS) are formed on the installations for thermal utilization (burning) of waste generated by oil and gas extraction (soil contaminated by oil and oil sludge cleaning of pipelines and tanks from oil and oil products and drill cuttings). SSS consist of ash component (particles of ash and slag smaller than 0,315 mm) and slag, including: slag sand - grain size from 0,315 up to 5 mm; the slag crushed stone grain size of more than 5 mm of Residual oil content in TSS not exceed 0.5%. In addition to the above in a mixture of sorbent-complexing agents, Sssimona be considered as a desiccant,
in the amount of 30-40% by weight of the mixture, which are large-tonnage waste requiring disposal, promising to use because they have developed specific surface area and hydraulic binding properties (activity). These materials in combination with the main binder (cement) bind large quantities of water and impurities, making BSH in inert and durable composite material.

Used as the main binder in the composition DSCM cement provides strength, water resistance, in combination with a liquid binder (liquid glass) addresses the fluidity slams, gives the material strength properties, binds toxins and components ABOUT preventing migration of contaminants into the environment.

Used as a sorbent of organic complexing agents fibrous sorbent (dried pulverized peat, produced by THE 1392-005-48952916-2001) density of not more than 180 kg/m3eliminates migration activity of pollutants, will destroy the residual oil content.

In a preferred variant embodiment of the invention, the sorbent-complexing agents used environmentally friendly organic fibrous (peat) sorbent.

The use in the claimed mixture as a mineral filler more rasprostranennoi with a wider range of fractions of natural disperse non-cohesive soils -
sand according to GOST 25100-95 reduces the cost DSCM. In accordance with table ± 10 GOST 25100-95 granulometric composition of natural sand (size and content of the grains) can be arbitrary, i.e., can be applied Sands from gravelistoe to dust. The basic mineral filler is the most common choice in oil and gas producing regions of Western Siberia fine sand and/or silt characteristics: particle size larger than 0.10 mm - not less than 75% for small or, respectively, less than 75% for silt. Moreover, the dosage of sand (0-30% by weight of the mixture) selected on the basis of grain-size composition and SB on the condition of obtaining the number of the plasticity of the mixture of about 7-12, i.e., the optimal particle size of the mixture corresponding to the light sandy to loam that are most conducive to strengthen the soil, including industrial cement. The volume of injected filler depends on the moisture content and density BS, for example, if the minimum density 1.3 kg/DM3maximum humidity BSH (70%) is the maximum amount of sand - 30% by weight of the mixture; at a maximum density of 1.8 kg/DM3and, accordingly, the minimum humidity (40%) flow rate of sand is 0-10% by weight of the mixture. Also the flow of sand is dependent on the strength and scope of the final product in the structures.

In savlon the second composition may use different grades of cement.
The basic binder is Portland cement, slag Portland cement and Portland cement with mineral additives according to GOST 10178, sulfate and pozzolanic cements according to GOST 22266, as well as cements for building solutions according to GOST 25328 grades not lower than 400 for coatings and 300 for a reason.

To improve the properties and performance DSCM used improving additives, including as microagents are used:

- calcium chloride technical, sodium chloride, calcium nitrite (up to 2% by weight of the mixture), which accelerate the curing of the material and antifreeze agents are able to produce DSCM in the winter. The above microadditives are powder bulk substances that in the North it is preferable from the standpoint of their transportation and injection with stirring compositions.

To improve DSCM can be used and other microadditives, including supplied in liquid form (solutions, emulsions):

- organogenic-siloxanes (NGL 136-41, NGL 136-M, manufactured according to GOST 10843-76, THE 6-02-694-76) in an amount of up to 0.5% by weight mixes;

- liquid glass (sodium silicate) in an amount up to 1% by weight of mix. Data supplements increase the water resistance and water resistance, lower water absorption and permeability, which prevents suppose wymiana toxic components ABOUT from the composition;

Application DSCM for construction of road pavement and subgrade of roads, grounds and other facilities contributes to the improvement of ecological safety, reliability of structures, excludes components BSH and waste into the environment.

Thus, thanks to the invention has made possible the transformation of drill cuttings and waste thermal sludge utilization in an inert composite material, binding in its structure pollutants, preventing their migration in the environment.

The processing of drill cuttings includes the following stages (Fig. 1):

- accumulation of drilling sludge;

- adding and mixing the mixture by the excavator;

- the mixture is moved to the stack to complete the process of summer is to be placed;

- made material warehoused at the sites of temporary storage and transport to the dumping area objects.

- in drill cuttings added components (the latter may be any other additive);

- mixing of the components of the excavator until blended;

- excavation and piling.

In one variation of the embodiment of the invention is a method of processing drilling waste includes recycling of drilling waste to produce road-building composite material comprising drilling cuttings density from 1.3 to 1.8 kg/DM3the cement as the main binder in the amount of 5-15% by weight of the mixture, thermal utilization of waste sludge (solochek) a density of from 1.2 to 1.6 kg/DM3in the amount of 30-40% by weight of the mixture, mineral filler, and sorbent-complexing agents, where the sorbent-complexing agents used organic fibrous (peat) sorbent 2-4% by weight of the mixture.

In a preferred variant embodiment of the invention the components of the mixture are placed near the excavator the length of the removal of his arrows.

For drilling waste pick-aligned space dimensions not less than 20×20 m Area is divided into areas of accumulation and storage of materials, processing site, access roads, site storage of materials. Pets enlargement through the use of the secondary material. Capacity 1 for processing is set in the ground 7. Preferably the container has a volume of 40 m3and dimensions of 6.4×2,5×2,5 m NGL 2 is stored in metal barrels 0.2 m3. The cement is stored in bags MCR, sand - bulk height not exceeding 2 m, SSS - bulk height of not more than 2 m DSCM 6 is formed in bulk with a maximum height of 4 m (Fig. 2).

The upper edge of the tank should rise above the terrain at a height of not more than 0.5 m in order to avoid buckling capacity under pressure of the ground - side walls externally reinforced by logs. The upper edge of the tank is reinforced concrete beam or pipe serving as a bump stop 8 from the discharge of drilling waste (Fig. 3).

Posted on bogs Bush Foundation over time, "SAG" in the peat, wellheads are exposed.

To restore the design level can be agreed upon with the oil areas of well pad be removed by excavating the soil and to fill the recess of the HCDS.

After setting'll take the first ground levelled by a bulldozer,
the space 8 is planned (Fig. 4).

During construction of well pads in areas with shallow groundwater table, water protection zones are waterproofing foundations.

As a waterproofing material commonly used polymer film that does not always provide the necessary degree of waterproofing due to its low mechanical strength.

More reliable sealing can be accomplished using the HCDS 9 with the addition of liquid glass to increase the waterproofing properties of the composite.

In water protection zones, it is advisable to carry out the isolation of HCDS 9 the bottom and sides of the layer of composite material of the polymer film (Fig. 4).

During the construction of wells permitted the use of HCDS 9 for filling the Foundation and strengthening of banks with the aim of saving the imported construction of the soil (Fig. 4).

The use of HCDS when reclaiming drilling mud pits produced by two main schemes - with a hollow drill cuttings from the body of the barn and processing of drill cuttings in the body of the barn.

When the hollow drill cuttings 13 of the barn, its processing is carried out on-site processing and received HCDS fits into the barn by the method of the thrust fault. This method is applicable for large barns, while the limit of the soil, a large level of occurrence of sludge. This is proizvoditsa slight reinforcement of the sludge khvorostyanoy lining 10,
then HCDS 9 is applied with a bulldozer method thrust fault. Work is consistently around the perimeter of the barn. The formation of the next strip of ground 11 is made after setting the HCDS prepared strip serves as a platform for the work and in bulldozer. On the ground 11 is applied to the peat layer 12 (Fig. 5).

In the processing of drill cuttings 16 in the body of the barn (Fig. 6) is the arrangement of the dividing strip 14 for passage of the excavator; the distance between the dividing strips and the embankment should be no more than two lengths of the boom of the backhoe for grasping the whole volume of battleships during processing. Processing of drill cuttings produced along the dividing strip 14 and the dike on the length of the boom of the excavator. Backfill soil 11 is made after setting the HCDS. Ground is applied recultivation layer 16.

The construction of the structural layers of roads with the use of HCDS in the following main ways: by mixing on a specially prepared with waterproof DTL sites in the right-of-way of a highway using multipass milling (DS-74); the preparation of a mixture in gruntosmesitel installations (DS-50A, B and others).

Also is the strengthening of slopes of the roadway (Fig. 7) using 16 and gravel sand 17.

When you implement this composition obtained material with a compressive strength of 0.2 MPa, suitable for the construction of additional layers (frost protect, etc.) bases of the road surface, for example, field roads, and durable device of banks.

When you implement this composition obtained material with a compressive strength of 0.05 MPa, zgodny for the construction of earthworks,
backfill and reclaim drilling mud pits.

Example 4

On site processing of imported materials, the beaker is placed cuttings, and adds the following components: 1 m3cuttings; 0.1 m3sand; 0.1 tons of cement and 0.4 kg NGL. The mixture is stirred for excavator Hitachi until a homogeneous mixture, and then produce the notch and stacking.

Example 5

On site processing of imported materials, the beaker is placed cuttings, in which the following components are added to 1 m3cuttings: 0.1 m3sand; 0.1 tons of cement and 0.2 m3penoizol. The mixture is stirred for excavator Hitachi until a homogeneous mixture, and then produce the notch and stacking.

Example 6

On site processing of imported materials, the beaker is placed cuttings, in which the following components are added to 1 m3cuttings: 0.1 m3sand; 0.1 tons of cement and 0.2 m3penoizol. The mixture is stirred for excavator Hitachi until a homogeneous mixture, and then produce the notch and stacking.

Example 7

On site processing of imported materials, the beaker is placed cuttings, in which you add components in the following ratio, wt.%:

BSH, sample # 1

38

Portland cement M-400

15

SSS

14,5

Mineral

30

filler

Dried

2

crushed peat

Organogenic-siloxanes

0,5

The mixture is stirred for excavator Hitachi until a homogeneous mixture, and then produce the notch and stacking.

SUBSTANCE: geogrid for a road surface is made in the form of a flat material of cellular structure formed by imposition of two mutually crossing systems of warp and weft threads with fixation of the place of their crossing. Along the warp at the distance that is larger than the cell width, but is less than the width of the vehicle tyre tread there are reinforcing threads laid with linear density increased 1.2-5.0 times, compared to the linear density of other warp threads.

EFFECT: increased strength of temporary technological soil field and along-the-highway roads due to improved structure of a reinforcing geogrid, providing for its increased stiffness and bearing capacity, with rational consumption of material for manufacturing of a geogrid.

SUBSTANCE: invention relates to the field of road construction, in particular, to construction of road structures with an asphalt-concrete coating of non-stiff type. The method to widen a road structure includes arrangement of a roadside soil horizontal cut along the coating edge for the depth equal to thickness of the existing coating with its simultaneous removal to the slope of the road embankment, cutting of the edge perpendicularly to the coating plane or vertically at the value of not more than 100 mm, removal of fragments into a truck bucket for reuse, erection of a vertical slurry wall from extracted metal sheet piles, tightly adjacent to the upgraded edge of the coating, at the same time the lower ends of the piles are embedded into the active layer of the compacted soil base for sufficient depth, and upper ends of piles with holes rise above the level of the horizontal bottom of the roadside soil cut by minimum height sufficient for placement of a lifting mechanism grip. Then along the slurry wall they remove roadside and embankment slope soil removal to the bottom of the road surface, and here they arrange the active layer of the soil base of recommended thickness for the rated value of widening with layerwise compaction of soil to maximum density at optimal moisture. On the active layer they arrange all structural layers of the road surface from materials that are similar to materials of the old road surface by quality, thickness and extent of compaction. Then a new coating is arranged, which adjoins along the plane to the old coating, similar to it, and then a protective layer of the asphalt-concrete layer along the complete width of the strengthened surface with displacement of the road axis, if necessary, by profiling. The process is completed with soil filling to the roadside and its compaction. In the second method of road structure widening they use non-removable reinforced concrete sheet piles for erection of a slurry wall in the same place without their stagewise removal in arrangement of road surface layers, leaving upper ends of piles at the level of the horizontal bottom of the roadside soil cut, and then they are coated by coating layers.

EFFECT: guaranteed preservation of bearing capacity of existing road surface and provision of possibility to let through traffic along the road without construction of a roundabout route helping to lower cost of road and repair works, increased overhaul periods with preservation of its high transport-operation indices for a long period of time.

SUBSTANCE: composition for sandy soil reinforcement, comprising a filler and a binder component, and the filler comprises sand milled to fine dispersion (74-136 nm), and the binder component is used as saponite-containing material milled to microdispersed state (265-451 nm) isolated from pulp of tailing dump of industrial ore dressing of diamond field deposit, with the following ratio of components, wt %: saponite-containing material 3-6, sand - the rest.

SUBSTANCE: method for enhancing road subgrade includes planning of the road subgrade, stretching across its surface of geotextile and geogrid, filling of cells of geogrid with filler. Filler is previously placed on the surface of the subgrade in front of the road car, then it is supplied to the place of fixation of the stretched geogrid by means of intake working member and conveyor, plan and compact into two stages, at first along the entire surface of the geogrid, and then in the band of action of the most intense probable load in order to prevent the tread formation, moreover the filler is moistened before laying into the geogrid and compaction.

EFFECT: improved efficiency and quality of the protective layer formation, increased stability of the base.

SUBSTANCE: road surface structure includes a base from overconsolidated soil with consolidation coefficient Cc=1.02-1.03, in the cross section made in the form of a trapezoid, the lower side of which is equal to the width of the traffic area, and the upper side is made narrower than the traffic area width by 20-25 cm at each side, with arrangement of a support layer from compacted crushed stone of triangular shape with a top located near the base of the trapezoid, and a double-layer coating from asphalt concrete, made along the entire width of the traffic area of the motor road. At the same time the width of the support layer in the upper part at each side of the base is 20-25 cm.

EFFECT: increased strength of a traffic area of a motor road due to reduced stresses from applied load in the area of transition from a stronger site of a road structure to a less strong site.

SUBSTANCE: method includes regulation of a khor in its lower part flowing from the bog and damming of water inflow into the bog with the help of arrangement of a pipe culvert, which is coupled to each other with the help of heads. Several pits are dug on the shore of the mineral part of the bog for the depth of the peat deposit. Drainage pumps are installed into pits with installation of discharge lines via damper wells into the lower part of the creek. Then coffer dams are dug, and water is released from the bog into the pit, and then the pumps are started, and water is pumped into the creek. After surface and partially ground waters have been pumped, and peat has settled, they start digging an open drainage network, coupling it via coffer dams with pits, still pumping water with pumps. At the same time peat reclamation is started from the shore line of the peat bog, and peat is replaced with mineral soil, simultaneously installing perforated wells in deepest areas on the bottom of the former peatbog, and the wells are previously wrapped with geotextile. Drainage pumps are placed into perforated wells, and ground waters are pumped into the lower part of the creek, thus reducing ground waters and creating conditions for final replacement of peat with mineral soil.

EFFECT: reduced time for drainage of peat bogs, provides for possibility to fill a groove after peat reclamation with mineral soil.

SUBSTANCE: invention relates to construction and utilisation of wastes of heat engineering, and namely to reinforced ground compositions (soil cements), which can be used for construction of structures, including in structures of bases of road pavements of automobile roads; in an earth bed of automobile roads and other structures; for backfilling, elimination and recultivation of developed soil banks and slurry ponds; for reinforcement of sides of roads, slopes and cavities. Composition for arrangement of bases of road pavements and structures, which includes cement, slurry of chemical water treatment of CHP, and when necessary, for assurance of required humidity (optimum for compacting), it additionally contains sand at the following component ratio, wt % (by solid phase): sand 57-82, cement 6-12, CHP chemical water treatment slurry (on a dry basis) 12-30. The invention is developed in a subclaim of the formula.

SUBSTANCE: road structure comprises an earth bed, a road surface with an underlying layer, sides, a longitudinal drainage system filled with crushed stone of fraction 20-40 and arranged in the body of the earth bed along the axis of the road, water drainage outlets. The base of the earth bed fill under trenches of the rated traffic area from the normative car load is made by geometry of a triangular stiff core from strong easily compacted grainy materials, which have draining properties, and by giving orthotropic properties.

EFFECT: restoration of high transport-operation characteristics of motor roads for a long period of time, increased bearing capacity of a road surface with provision of passage of motor transport with high loads at an axis and with exclusion of road closing for winter-spring period.

SUBSTANCE: road structure comprises an earth bed, a road surface with an underlying layer, sides, a longitudinal drainage system filled with crushed stone of fraction 20-40 and arranged in the body of the earth bed along the axis of the road, and water drainage outlets. The base in the fill of the earth bed under the road surface is made according to geometry of the triangular stiff core from strong easily compacted grainy materials with draining properties.

EFFECT: restoration of high transport-operation characteristics of motor roads for a long period of time, increased bearing capacity of a road surface with provision of passage of motor transport with high loads at an axis and with exclusion of road closing for winter-spring period.

SUBSTANCE: previously prepared samples with various quantity of a filler in a highly dispersed condition for a dry construction mix are placed into a hollow part of metal washers, placed on a metal plate, are compacted by any available method under permanent load of up to 5 MPa per 1 cm2 of sample surface for 10-15 seconds, then marks are applied on the surface of each sample in the form of drops of a solution of various concentration, wetting angles of samples are measured θ, a curve of dependence is built cosθ-1=f(1/σl), where σl - surface tension of the liquid, they determine the angle of inclination of this functional dependence a for each sample of different composition, the curve of dependence a is built on quantity of mix components, and by the point of break of the curve of dependence they define the optimal content of a modifier in the tested object.

EFFECT: reduced number of tests and higher accuracy of mixture composition selection.

EFFECT: improvement of material characteristics, providing protection from neutron radiation flows, provision of technological mobility of working mixture in the process of pouring construction elements.

SUBSTANCE: in the method to manufacture wood concrete items with production of a base on their surface for plastering, providing for preparation and dosing of a hydraulic binder, ground cane stems, water, mixing of components, moulding of items with vibration, hardening, moulding with vibration is carried out so that cane stems cut into sections with length of 4-6 cm are located near the surface of the items, with one end staying in the mix, and with the other one - protruding outside and forming a base for application of plaster.

SUBSTANCE: invention relates to the industry of building materials and can be used in manufacturing products in civil and industrial construction, monolithic construction and for erection of special-purpose structures. The high-strength light concrete made from a concrete mixture contains portland cement, filler, a plasticiser, water, a mineral part consisting of microsilica with average particle size of 0.01-1 mcm, rock flour - a product of grinding quartz sand with specific surface area of 700-800 m2/kg and quartz sand with grain size of 0.16-0.63 mm, with the following ratio of components, wt %: portland cement 33.8-53.0, microsilica 4.77-13.8, rock flour 1.5-11.9, quartz sand 5.1…32.2 , microspheres 4.3-19.27, plasticiser 0.3-0.48, water - the balance.

SUBSTANCE: invention relates to method of manufacturing fast setting light-weight cementing composition with improved compressive strength for building products such as panels. Method of obtaining light-weight cementing mixture, which has improved compressive strength and resistance to water, includes mixing water, cementing reacting powder, alkali metal salt of citric acid as set accelerator and light-weight filling agent, where weight ratio of water to reacting powder constitutes approximately 0.17-0.35:1.0, reacting powder includes 75-100 wt % of sol dust, which contains at least 50 wt % of fly ash of class C and 0-25 wt % of hydraulic cement and/or gypsum, setting of cementing mixture being achieved within from 4 to 6 minutes of composition mixing without addition of set retarder. Invention also deals with composition for obtaining light-weight cement panel.